Crossword puzzle clue "low end smoke"

According to Flo Rida, one who got low, low, low, low, low, low, low, low

Low-end smoke

Smoke in a smoke-filled room, perhaps

Smoke detector's low-battery sound

Smoke detector sounds when the battery runs low

"I'm the beginning of eternity, the end of time and space, the beginning of the end, and the end of every place ..."

Knife set available for the low, low price of $19.99 (act now!)

Low-skilled, low-paying rut